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【多选题】
冬期施工所用材料应符合下列哪些规定( )。
A.
石灰膏、电石膏等应防止受冻，如遭冻结，融化后使用
B.
拌制砂浆用砂，不得含有冰块和大于lOmm的冻结块
C.
砌体用块体不得遭水浸冻
D.
冬期施工砂浆试块的留置，除应按常温规定要求外，尚1组与砌体同条件养护的试块，用于检验转人常温28d的如有特殊需要，可另外增加相应龄期的同条件养护的
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